Differential Mode Noise Estimation and Filter Design for Interleaved Boost Power Factor Correction Converters

Interleaved power factor correction (PFC) is widely used circuit topology due to good efficiency and density for single-switch boost PFC. As the differential mode (DM) electromagnetic interference (EMI) noise magnitude depends upon input current ripple, this research details a comprehensive study of DM EMI filter design interleaved PFC with aim minimizing component size. It also demonstrated that different numbers stages switching frequency influence attenuation requirement and, thus, First, an analytical model derived on basis Norton equivalent noises within range 9–500 kHz. The can help identify proper phase shifting among converters in order minimize considered at frequency. So, novel phase-shift method developed get minimized required by Band B. Further, volume optimization was introduced based calculated volumetric parameters. Based obtained results, unconventional conventional shifts have performance decreasing B A, respectively. A 2-kW case presented verify theoretical analyses impact phase-shifting